A bank with branches located in a commercial district of a city and in a residential area has the business objective of developing an improved process for serving customers during the noon-to-1 PM. lunch period. Management decides to first study the waiting time in the current process. The waiting time is defined as the numtb when the customer enters the line until he or she reaches the teller window. Data are collected from a random sample of 15 customers at each branch. Complete parts (a) through (d) below. a. Assuming that the population variances from both banks are equal, is there evidence of a diference in the mean waiting time between the two branches? (Use a 0.05.) Let p be the mean waiting time of the commercial district branch and z be the mean waiting time of the residential area branch. Determine the hypotheses. Choose the correct answer below. OA H S2 B. Ho 2 Waiting time data OG. Ho 2 OD. Hg "2 Commercial Residentialo 4.21 9.58 581 8.01 Find the test statistic. 5.56 3.04 5.31 4.56 2.67 3.47 3.02 4.68 6.08 "STAT "O (Round to two decimai places as needed.) 5.64 8.57 3.84 8.25 8.53 10.43 6.83 5.68 4.13 6.01 9.82 5.38 Find the critical value(s) (Use a comma to separate answers as needed. Round to two decimal places as needed.) 0.26 5.07 6.35 6.48 3.58 Choose the correct conclusion below. OA. Reject Ho. There is insufficient evidence that the mean waiting time between the two branches dfer. B. Do not reject Ha. There is sufficient evidence that the mean waiting time between the two branches differ. O C. Reject Ho. There is sufficient evidence that the mean walting Sme between the two branches difer. OD. Do not reject H. There is insufficient evidence that the mean waiting time between the two branches differ. Print Done b. Determine the p-value in (a) and interpret its meaning p-value O (Round to three decimal places as needed.)
A bank with branches located in a commercial district of a city and in a residential area has the business objective of developing an improved process for serving customers during the noon-to-1 PM. lunch period. Management decides to first study the waiting time in the current process. The waiting time is defined as the numtb when the customer enters the line until he or she reaches the teller window. Data are collected from a random sample of 15 customers at each branch. Complete parts (a) through (d) below. a. Assuming that the population variances from both banks are equal, is there evidence of a diference in the mean waiting time between the two branches? (Use a 0.05.) Let p be the mean waiting time of the commercial district branch and z be the mean waiting time of the residential area branch. Determine the hypotheses. Choose the correct answer below. OA H S2 B. Ho 2 Waiting time data OG. Ho 2 OD. Hg "2 Commercial Residentialo 4.21 9.58 581 8.01 Find the test statistic. 5.56 3.04 5.31 4.56 2.67 3.47 3.02 4.68 6.08 "STAT "O (Round to two decimai places as needed.) 5.64 8.57 3.84 8.25 8.53 10.43 6.83 5.68 4.13 6.01 9.82 5.38 Find the critical value(s) (Use a comma to separate answers as needed. Round to two decimal places as needed.) 0.26 5.07 6.35 6.48 3.58 Choose the correct conclusion below. OA. Reject Ho. There is insufficient evidence that the mean waiting time between the two branches dfer. B. Do not reject Ha. There is sufficient evidence that the mean waiting time between the two branches differ. O C. Reject Ho. There is sufficient evidence that the mean walting Sme between the two branches difer. OD. Do not reject H. There is insufficient evidence that the mean waiting time between the two branches differ. Print Done b. Determine the p-value in (a) and interpret its meaning p-value O (Round to three decimal places as needed.)
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 25PPS
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